Section 7 — Exploded Views and Parts Lists

GT-990 Engine – Drawing No. 0G2963-G (Part 1)

ITEM

PART NO.

QTY.

DESCRIPTION

 

ITEM

PART NO.

QTY.

DESCRIPTION

1

0C5729

1

ASSY, CRANKCASE WITH SLEEVE

33

0D3745

1

TUBE, DIPSTICK

2

0E9843A

1

SEAL, 38 I.D. CRANKSHAFT GREEN

34

0C3027

1

O-RING, 3/8 X ½

3

0G0919

7

SCREW, HHFCS M6-1.0 X 12 G8.8

35

0E9842A

1

SEAL, 42 I.D. CRANKSHAFT GREEN

4

0C5372

1

ASSEMBLY, BREATHER

36

0F8054

1

GEARCOVER / ADAPTOR GTH990/760

5

0C3005

1

GASKET, BREATHER COVER

37

0C3006

10

SCREW, HHFC M10-1.5 X 55

6

0E3372B

1

SEPARATOR, OIL BREATHER

38

080318

8

SCREW HHFC M6-1.0 X 25

7

0D8067A

1

ASSEMBLY, HEAD #1

39

0G1839

2

LIFT HOOK, GT990/760

8

071983

4

RETAINER, PISTON PIN 20

40

0D2723D

1

COVER, ROCKER W/OIL FILL

9

0G0693

1

ASSY, ROCKER COVER W/BARB

 

 

 

 

“GENERAC” TEXT

10

0D4788

1

PLUG,STD PIPE 3/8” STEEL SQ HEAD

41

0C2979

2

GASKET, VALVE COVER

11

0G2752

2

PISTON, DISH TOP DIA 90 COATED

42

086515

8

KEEPER, VALVE SPRING

12

0G2565

2

RING SET, PISTON DIA 90

43

0D2274

4

RETAINER, VALVE SPRING

13

0E1466

2

PIN PISTON

44

0D3867

4

SPRING, VALVE

14

0D4041

1

ASSEMBLY, CAMSHAFT & GEAR

45

078672

2

SEAL, VALVE STEM D7

15

043790A

1

BARBED ELBOW, 90 DEG. 3/8NPT X

46

0C5371

4

WASHER, VALVE SPRING

 

 

 

3/8 VS

47

072694

4

STUD, ROCKER ARM PIVOT

16

093064

1

ASSEMBLY, OIL FILL CAP

49

0D5313

4

ROCKER ARM

17

0C2977

1

GASKET, CRANK CASE

50

0D3998

4

NUT, HEX M8-1.0 GB YELLOW CHROM

18

0C5943

1

SEAL, OIL PASSAGE

51

0D6024

2

PLATE, PUSH ROD GUIDE

19

0E3791E

1

ASSY, GTH-990 DIRECT DRIVE

52

0C2976

12

SCREW HHFC M8-1.25 X 65

20

0E3223

2

ASSEMBLY, CONNECTING ROD GT-990

53

086516

2

VALVE, EXHAUST

21

0D2157

2

SCREW SHC M6-1.0 X 50 G8.8

54

0C2229

2

VALVE, INTAKE

22

0E6098

1

SCREEN, OIL PICKUP

55

083897

4

TAPPET, SOLID

23

0D4123B

1

ASSY,OIL PUMP GTH W/O O-RING

56

0D8067B

1

ASSEMBLY, HEAD #2

24

0E8152

1

O-RING, 0.49 ID X 0.07 THICK

57

0D9853D

4

PUSHROD 147

25

0C3011

2

COVER, OIL RELIEF

58

0C2978

2

GASKET, HEAD

26

0C3009

2

SPRING, OIL RELIEF

60

0D6008

1

KIT GEAR COVER

27

0C3010

2

BALL, 1/2D OIL RELIEF

61

0D4010

1

KIT GASKET

28

093873

2

WASHER, LOCK RIB M6

62

0D6007

1

KIT PISTON & RINGS

29

0F5458

1

SCREW, PLASTITE HI-LOW #10

63

0D4012

1

KIT BREATHER ASSEMBLY

30

0C5998

1

CLAMP, OIL TUBE

64

0D8675A

1

KIT HEAD ASSEMBLY CYLINDER 1

32

0F2664E

1

ASSEMBLY, DIPSTICK GTH-990

65

0D8675B

1

KIT HEAD ASSEMBLY CYLINDER 2

 

 

 

PORTABLE

66

0D4015

1

KIT OIL RELIEF

23